And william



y 1933. w. 1.. glLcHRis-T ET AL 11,911,684

COIN SELECTING AND DETECTING'DEVICE 7 Filed Aug. 16, 1930 5 Sheets-Sheet l INVENTORS. -U W.L..C;ILCHRIS7'.

By WTHOOFNAGLE 5 Y. \N A ATTORNEY.

May 3@, 1933.

W. L. GILCHRIST ET AL COIN SELECTING AND DETECTING DEvIcE Filed Aug. 16, 1930 5 Sheets-Sheet 5 A TTORNE Y.

Patented May 30, v1933 UNITED STATES PATENT OFFICE wrnnran' L. GILCHBIS'I', or tone inmcn, CALIFORNIA, AND WILLIAM '1. noommem, or GLEN men, new JERSEY. ASSIGNORS T ROWE sane EJ'ECTOR co., mm, or Los lureELEs, CALIFORNIA, A conronarron or NEVADA v COIN' SELECTING AND DETECTING DEVICE Application filed August 16, 1930. Serial No. 475,756.

This invention relates to improvements in coin selecting and detecting devices.

The general object of this invention is to provide an improved magnetic coin selector. Another object of the invention is to provide a coin selector wherein a magnetic field or flux coacts with gravity for segregating various coins or tokens.

A further object of the invention is to 0 provide an improved coin selector including opposed horseshoe magnets which provide a magnetic field to set up eddy currents in a rolling coin or token.

Another object of the invention is to pro- 15 vide. means for preventing paramagnetic coins from reaching the flux field.

Other objects and the advantages of this invention will be apparent from the following description taken in connection with the accompanying drawings wherein:

Fig. 1 is a. side view of our improved coin selecting device.

Fig. 2 is an enlarged end view of the device shown in Fig. 1.

Fig. 3 is an enlarged view similar to Fig. 1 with the side plates removed.

Fig. 4 is a top plan view of the device shown in. Fig. 3.

Fig. 5 is a side view partly in sectionof a modified form of our invention.

Fig. 6 is a top plan view of the device shown in Fig. 5. r

Fig. 7 is a section taken on line 7-7 of Fig. 5.

' Fig. 8 is a top plan view of a modified form of magnet member and a fragment of a coin chute.

Fig. 9 is an inner end view of one of the magnet sets shown in Fig. 8.

Fig. 10 is a top plan view of another modified form of magnet and a fragment of a coin chute and Fig. 11 is an end view of the device shown in Fig. 10.

Referring to the drawings by reference characters we have indicated our improved coin selecting device generally at 10., This device is adapted to be used in combination with token or coin controlled machines,

change making devices or can be used independently for testing coins.

As shown the device 10 comprises spaced side plates 11 and 12 having coin chutes formed therebetween by guides 13, 14 and 15 to which the side plates are secured by screws 16.

The guide 13 forms the outer portion of a coinchute 17 which includes a vertical enat a steeper angle than the portion 22 and forms the inner portion of a coin chute 26, the outer portion of which is formed by the guide 15.

The apex 27 at the juncture of the inclined portion 22 of the chute 17 and the inclined portion 25 of the chute 26 is positioned at the side of the center line C of the entrance 18 nearest the chute 26.

Adjacent the top of the device we provide a magnet 28 which is of the horseshoe type; Thismagnet is positioned adjacent the side of the entrance 18 towards the chute 26 and is positioned on the outside of the plate 11. Various means may be used to secure the magnet in position but we have shown the magnet as engaging a diamagnetic spacer 29 and being clamped tothe plate 11 by a bar 30 and a screw 31.

At the portion 21 of the chute 17 and spaced a slight distance from the curved portion 20 we provide a pair of opposed magnet members indicated generally at 32.

These magnetic members are of the horserate magnets as shown the north and south poles are placed on alternate sides. As

shown the pole ends of the magnets 32 are positioned in apertures 34 provided in the plates 11 and 12 and are flush with the inner faces of the plates. The magnets 32 are mounted on lips 35 turned out from the plates and clamped to the lips by. bars 36 and 37 and screws 38.

The plate 11 extends below the portion 21 of the'chute and has provided thereon an open topped receiver 40 which includes a .side wall 41 spaced from the plate 11, end walls 42 and 43 and an angular bottom 44 which inclines downward and outward towards a chute 45.

In the receiver 40 we provide a coin chute 46 which is spaced from the open lower end of the coin c ute 17 and includes a curved portion 47, the upper end of which is osidesired manner tot any desired operating mechanism or receptacle.

In front of the inner end of the curved portion 47 of the chute 46 we provide a spur shaped deflector 48 and in frontof the outer side of the chute 46 WGI'PI'OVid G a spur shaped deflector 49 and at the end of the lower portion of the guide'13 we provide a deflector portion 50. Opposite the inclined portion 25 of the guide l4'and therebelow we provide a spur shaped deflector 51.

In operation when the device is constructed to segregate nickels from counterfeit money and slugs, when a nickel as indicated at N is dropped in the entrance 18 it will 3 v strike the inclined portion 22 of the guide 14 and roll into the vertical portion 19 of the chute 17 and be guided by the curved portion 20 onto the inclinedportion 21 from which it will exit. Themomentum of the coin when it leaves the chute 17 will over-- come the force of gravity sufliciently to carry the nickel or coin past the deflector 48 into the chute 46.

All counterfeit coins or slugs made of a diamagnetic' material will pursue the same course as the nickel until they reach the end of the horizontal inclined portion 21 of the chute 17. I

The magnets 32 are of such construction that the eddy currents set up by the nickel rolling through the flux field will effect the momentum of the .nickel in a manner whereby the force of gravity will direct it into the chute 46% previously described,.

while the eddy currents set up by a counterfeit nickel or a slug will retard or dam the guides greatly retarded slugs away from the plate 11 so that even though the device was tilted forward the slug would not enter the chute 46. a

When a paramagnetic slug is dropped in the entrance 18 the magnet 28 attracts it thereby causing the slug to fall on the angular portion 25 of the guide 14 whereuponit rolls down the portion 25 and strikes the deflector 51 which directs it away from the side plate 11 and prevents it from entering the coin chute46. All the rejected coins which fall into the receiver pass therefrom through the chute 45, to' a suitable return out of the machine with which the device is associated. v V

In Figs. 5, 6 and 7 we have indicated generally at 55 a slight modification of our in vention wherein the paramagnetic slugs are removed in a different manner from that i the device 10. V

Asshown the device 55 comprises spaced side plates 56 and .57 having a coin chute 58 The chute 58 includes a vertical portion 62 which curves as at 63 into a portion 64 which is slightly inclined downwardly away from the vertical portion.-

Adjacent the top of the device we provide an elongated aperture 65 which is the same width as the chute 58. For closing the aperture 65 we provide a closure member or door 66 which is pivoted. on a rod 67 supported Ry e-ars68 turned out from the plate 57.

he door 66 is preferably made of a very .thinand li ht weight materialand the inthe door is adapted to be nor-' ner face 0 mally flush withthe inner face ofthe plate 57. A lip 69 adjacent the lower eiid of thedoor engages the outer face of the plate 57 and prevents the door from swinging inward beyond the inner face of the plate 57. Spaced fromthe door 66 and overlaying it intermediate its length we rovide a magnet 0 which isshown as of type. The magnet70 engages a spacer block 71 and is clamped thereto by a bar 72 which is secured in position by a screw 73.

Intermediate the length of the portion 64 of the chute 58 we provlde a pair ofopposed magnet members indicated generally at 75.

the horseshoe These magnetic members are of the horse- 1' shoe type and like the magnets 32 of the-device 10 may each be one solid piece or may osilab

angular bottom 86 which inclines downward and outward towards a chute 87.

In the receiver 40 we provide a coin chute 88 which is spaced from the open lower end of the coin chute 58 and includes'a curved portion 89, the upper end of "which is 051- tioned so that the correct coin passing rom the chute 58 will enter the chute 88. From the chute 88 the coin may be directed in any desired manner to any desired operating mechanism or receptacle.

In front of thetinner end of the curved portion 89 of the c ;ute 88 we provide a spur shaped deflector 90 and in front of the other side of the chute 88 we provide a spur shaped deflector 91 and at the lower end'of the guide 59 we provide a deflector. 92.

. In operation when the device 55 is constructed to segregate nickels from counterfeit money and slugs, when a nickel is dropped in the vertical portion .62 of the chute 55 it passes the door 66 and rolls past the magnets 75 and passes fromthe chute 58. The momentum of the coin when it leaves the chute 58 will overcome the force of gravity sufliciently to carry the nickel past the deflector into the chute 88.-

All other counterfeit coins or slugs made of diamagnetic material will follow the same course as the nickel until they reach the end of the chute 58.

The magnets 75 like the magnets 32 'of the device 10, are of such construction that the eddy currents set up by the nickel rolling through the flux field will effect the momentum of the nickel in a manner whereby the. force of gravity will direct it into the" chute 88, while the eddy currents set up by a counterfeit nickel or slug will retard or damp the momentum of the same in correspondence to the counter currents generated'and to an extent depending on the materials of which the slug is constructed.

The deflector 90 preventsslugs which contain materials similar to nickels from entering the chute '88 and the deflector 91 prevents slugs Which might be repelled from the magnets'75 faster than a nickel fromentering the chute 88 while the deflector. 92 guides greatly retarded slugs away from the plate 56 so that even though the device is tilted forward chute 88.

When a paramagnetic slug is dropped in the entrance of the chute 58 the magnet attracts the slug towards itself whereupon the slug will not enterxthe the pressure of the slug opens the door 66- and as the slug continues to fall it moves out through the apertures 65 and drops into a chute'93 which directs the slug into the receiver 82. 1

Although we have shown and described the devices 10 and 55 as being constructed to segregate nickels from counterfeit slugs itwill be understood that our invention may be constructed to operate in the same manner for selection of metal coins, tokens, etc. I

of any denomination or description.

In Figs. 8 and 9 we have indicated generally at 95 a modified form of opposed mag-- net members which may be used in place of the magnets 32 in the device 10 and the magnets 75 in the device 55. The magnetic members 95 each includetwo. horseshoe magnets 96 which maybe mounted similar to the magnet members 32 and 75 and which like the magnet members 32 and 75 may be .each made of one solid piece or aplurality of horseshoe magnets 97 superimposed and having their north and south poles arranged in alternate relation.

In- Figs. 10 and 11 we have indicated generally at 100 another modified form of magnet member which may be used in place of the magnet members 32 and 75. When the ends 104 the faces of which lie'flush with the inner surface of the coin chute. The

effect of the magnets 101 on 'diamagnetic.

coins and slugs is the same as previously described in connection with the effects of the magnets 32 and 75 of the devices 10 and 55.

From the foregoing description it will be apparent that we have provided a novel .coin detector which is simple in construction and highly efiicient in use.

Having thus described claim:

1. In a coin detector, a pair of spaced side plates, a plurality of guide members positioned between said side plates and secured thereto, said guide members forming two chutes, one of said chutes being for diamagnetic coins and slugs and the other being for paramagnetic coins and slugs, said first chute including a vertical entrance portion, an offset vertical portion communicating with said entrance portion, and an inclined portion communicating with said our invention, we

ofiset vertical portion, said inclined portion being inclined downwardly away from said offset vertical portion, said paramagnetic chute communicating with said entrance portion of said first chute, a magnetic member adjacent the side of said entrance to said paramagnetic chute, said paramagnetic chute having an exit opening cmmunicat-' ing with the exit opening of said first chute,

a third chute and means to direct a correct coin towards said third chute. 2. In a coin detector, a pair of spaced side plates, a plurality of guide members positioned between said side plates and secured thereto, said guide members forming a chute, said chute including a vertical portion, and an inclined portion communicating "with said vertical portion, said inclined prortion being inclined downwardly away om said vertical portion, a second coin chute spaced below and ahead of the lower end of said first chute, means to control the momentum of a correct coin whereby it will be carried into the second chute after leaving said lower end of said first chute, a desaid offset-vertical portion, said inclined por-- flector to direct spurious coins away from said second'chute, there being an aperture in one of said side plates intermediate the length of said vertical portion of said firstchute, a hinged closure for said aperture, amagnetic member spaced from and overla ing said closure, said .magnet being adhpted to attract paramagnetic coins toward itself whereupon said coins will swing said closure outward and said coins will drop outside of said drop chute.

3'. In a coin detector,-a pair of spaced side plates, .aplurality of guide members positioned between said side plates and secured thereto, saidguide members forming a chute, said chute including avertical en trance portion, anoffset vertical portion communicating with said entrance portion and an mclmed portion commumcat ng with tion being inclined downwardly away from said offset vertical portion, a pair of opposed magnetic members intermediate the length of said inclined portion, each of said magnetic members including a lurality of low and ahead horseshoe magnets, the poles ,6 said maside plates, a second coin chute spaced beof the lower end ofsaid first chute, said secondchute being ina position whereby the momentum of a correct coin after leaving "said lower end of said first chute will carry'it into said second chute.

'1 4. In a coin detector, a pair of s aced-side plates, a plurality of ide mem rs positioned between said si e plates and secured thereto, said guide members forming a chute,

said chute including a vertical entrance portion, an ofiset vertical portion communicating with said entrance portion and an inclined portion communicating with said oflfset vertical (portion, said inclined portion being incline tioned between said. side netic'coins and slugs and the downwardly away' from I said ofiset vertical portion, a pair of opposed magnetic members intermediate the length of said inclined portion, each of said magnetic members including a plurality of horseshoe magnets, the poles of said magnets'being positioned in apertures .in said side plates, a second coin chute spaced belowand ahead of the lower end of said first chute, said second chute being in'a position whereby the'mementum of a correct coin after leaving said lower end of said first chute will carry it into said second chute, a spur shaped deflector adjacent the inner end of said second-chute to direct spurious coins away from said second chute and another spur shaped deflector adjacent the outer side of said second-chute adapted to direct a spurious coin-away from said second chute.

5. In a coindetector, a pairof' spaced side plates, a-pluralityxof guide members positioned between saidx'side plates and secured thereto, said guidemembers forming a chute, said chute includinga vertical portion, and an inclined portion communicating with said vertical portion, said inclinedportion being inclined downwardly awayf'from said vertical portion, a pair of opposed magnetic members intermediate the length of said inclined portion, 'each of said magnetic membersincluding a plurality of horseshoe magnets, the poles of said magnets being positioned in apertures in said side plates, a second coin chute spaced below and ahead of the lower end of said 'gfirst chute, said second 1 chute beingin aposition whereby the movmenjlum of a correct coin after leaving said lower end of said first chute will carry it into said second chute, a spur shaped deflector adjacent the-outer sideof said second chute adapted to direct a spurious coin away from said second chute, there being an aperture in one of said side plates intermediate the length of said vertical portion of said first chute, a hinged closure for said aperture, a magnetic memberv spaced from and overlaying said-closure, said magnet being adapted to attract paramagnetic coins toward itself whereupon saidcoins will swing said closureoutward and said coins will drop .outsi if said first-chute.

'6. Inacom detector, a pair of spaced side plates, a plurality'of *gulde members posilates and secured thereto, said. guide mem rs forming two chutes, one of'said chutes be' g for diamag I other being for paramagnetic cows and slugs, said first chute mcludmg a vertical entrance portion, an offset vertical portion communicating withsaid entrance portion and an inclined portion communicating with said ofiset vertical orti on, said inclined portion being inclined 45 chute to direct spurious coins awa downwardly away from said ofiset vertical portion, a third coin chute spaced below and ahead of the lower end of said diamagnetic chute, means to control the momentum of a correctcoin whereby it will be carried, into thethird coin chute after it has left the lower end of the diamagnetic chute, means to direct spurious coins away from said third chute, said paramagnetic chute communicating with said entrance portion of said first chute, a magnetic member adja-. cent the side of said entrance to said paramagnetic chute, said paramagnetic chute havin an exit opening above the exit opening 0 said'first chute, and a deflector adjacent said exit of said paramagnetic chute. adapted to direct spurious coins away from said third chute. .7. In a coin detector, a pair of spaced side plates, a plurality of guide members positioned between said side lates and secured .thereto, said uide mem ers forming two chutes, one 0 said chutes being for dia-' magnetic coinsand slugs and the other being for paramagnetic coins and slugs, said first chute including a vertical entrance portion, an ofiset vertical. portion-1 communicating with said entrance portion and an incline portion communicating with said ofl'set vertical ,portion, said inclined portion being incline downwardly away from said ofiset vertical portion, a pair of opposed magnetic members intermediate the length of said inclined portion, each of said magnetic. members including a lurality of horseshoe magnets, the poles oi positioned inapertures. in said side plates, a third coin chute spaced below and ahead of the lower end of said diamagnetic chute,

4 said third chute being in a position where the momentum of a correct com after leaving said lower end of said first chute will carryit into said third chute, a ur shaped deflector adjacent the inner end 0 said ttliird om said third chute, a spur shaped. eflector' adjacent the outer side of sai third chute adapted to 'direct a spurious coin away from said third chute, said paramagnetic chute communicating with said entrance portion of said first chute, a magnetic member adjacent the side of paramagnetic chute, said paramagnetic chute having an exit above the exit opening of said first chute, a spur shaped deflector adjacent said exit of saidparamagnetic chute adapted to direct'spurious coins away from said third chute.

8. In a coin detector, a pair of spaced side plates, means to form two' coinchutes between s aid plates, said chutes havin a common. entrance portion, one of sai chutes being for diamagnetic coins and slugs and the other chute being for paramagnetic coins as and slugs, said first chute including an ofiset portion in communication with said ohtrance portion and an inclined portion com-f municating with said ofiset portion, said inclined portion being inclined downwardly away from said ofl'set portion, said parama netic chute having an entrance, portion an having a. magnetic member adjacent to said entrance portion, said paramagnetic chute having an exit opening adj acent to the exit opening of said first chute, a third chute and means to direct a good coin towards sai third chute.

9. In a coin com. chutes havin common entrance way, said ma etic means to cause paramagnetic coins an slugs to proceed in one chute while diamagnetic coins proceed in the other chute, said chutes-including portions whereby the detector a pair of side plates including means to form a pair of so chutes diverging beyond said entrance way, i

chutes cross, means associated with the diamagnetic chute adjacent the juncture of-the chutes to produce a chute and a deflector having a" pointed front end arranged in advance 0 the juncture of said chutes and in the path of coins passing through the flux field.

In testimony whereof, we our signatures;

'WILLIAM. L. GILCHRIST.

hereunto aflix flux field across the WILLIAM T. HOOFNAGLE.

said magnets being said entrance to said Y 

